CN108951314A - A kind of groove profile rail and I-rail connection structure and welding method - Google Patents
A kind of groove profile rail and I-rail connection structure and welding method Download PDFInfo
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- CN108951314A CN108951314A CN201811030573.3A CN201811030573A CN108951314A CN 108951314 A CN108951314 A CN 108951314A CN 201811030573 A CN201811030573 A CN 201811030573A CN 108951314 A CN108951314 A CN 108951314A
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- 238000003466 welding Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000007704 transition Effects 0.000 claims abstract description 53
- 230000002787 reinforcement Effects 0.000 claims abstract description 13
- 230000003447 ipsilateral effect Effects 0.000 claims abstract description 3
- 238000005498 polishing Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000005242 forging Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
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- 238000004134 energy conservation Methods 0.000 description 1
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- 229910000679 solder Inorganic materials 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B21/00—Track superstructure adapted for tramways in paved streets
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B21/00—Track superstructure adapted for tramways in paved streets
- E01B21/04—Special fastenings, joint constructions, or tie-rods
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a kind of groove profile rails and I-rail connection structure and welding method, connection structure includes groove profile rail, I-rail and special-shaped transition rail, the groove profile rail, special-shaped transition rail is equal with the rail head of I-rail height and work edge direction is consistent, the special-shaped transition rail includes grooved track section, changeover portion and I-rail linkage section, the grooved track section shape is identical as the groove profile rail, the I-rail linkage section is weldingly connected with the I-rail, the grooved track section is weldingly connected with the groove profile rail, the web of the rail of the I-rail and the web of the rail of the I-rail linkage section are non-coplanar, the not ipsilateral of the web of the rail of the web of the rail of the I-rail and the I-rail linkage section is respectively welded stiffening plate in connecting pin, the reinforcement plate end face is weldingly connected with the corresponding web of the rail respectively.Intensity of the invention is unaffected substantially, has preferable reliability compared with prior art.Simultaneously because work edge direction is consistent, stability is preferable when vehicle operation passes through.
Description
Technical field
The present invention relates to track fields, and in particular to a kind of groove profile rail and I-rail connection structure and welding method.
Background technique
First developing public transport is the important Transportation Develop ment Strategy in China, and modern tram is public as the intermediate level
Traffic system becomes the inexorable trend of public transport development with its hommization, large capacity, environmental protection, energy conservation, the feature in modern times.
In the rail system of modern tram, main track mainly uses groove-shape rail.It is used in modern tram
Greening, which mats formation, hardens the differences such as mat formation mats formation under conditions of form, and groove profile rail can effectively play the buffer action mated formation with wheel track
Its rail lip can play the role of guard rail to improve tramcar operation reliability to protection paving structure simultaneously.In view of economy and
Technical requirement, modern tram mainly use 50kg/m rail in parking lot line, are a kind of I-rails.In some route sections
Groove-shape rail and above-mentioned I-rail need to be attached by point.There are mainly two types of the connection methods of existing difference rail rail type,
Special-shaped fishtail clamping plate connection method and different rail rail type weldings.
1. special-shaped fishtail clamping plate connection method
For special-shaped fishtail clamping plate connection method, since the height section of modern tram difference rail type is different, tie point
The stress of generation is concentrated, and manufacturing process is complicated, and intensity is not so good as common fish platee, Broken condition is often occurred, is seriously jeopardized row
Vehicle safety.
2. different rail rail type weldings
For different rail rail type weldings, need using special-shaped solder joint, by two kinds of differences with certain altitude difference
The rail welding of model is together.Since special-shaped welding procedure this at present is still immature, welding point poor toughness, mechanical property
It differing greatly with rail base material, stress concentration effect is obvious, crackle easily occurs at the ballast bed equal biggish structure of relative settlements,
The case where being even broken, seriously jeopardizes traffic safety.The location of this kind of method connection is generally required using solid concrete roabed etc.
The high organization plan of cost, it is less economical, and require to limit vehicle by speed, influence modern tram operation
Efficiency.
As the utility model patent of application number 201520006789.1 discloses one kind for modern tram difference rail
The connection slot is respectively welded using grider rail rail head and an I-rail rail head by both ends for the transition rail connected between type
Type rail and I-rail are connected in middle transition section using chamfered transition, though the structure enables the intensity being welded to connect and reliability obtain
Certain raising has been arrived, but in connector vehicle due to chamfered transition, operation stability decline, it is often more important that this transition rail must
Must be separately fabricated, the rail head structure at track both ends is different, therefore manufacture difficulty is larger, it is also necessary to manufacture and design corresponding equipment and
Mold improves production cost.
Summary of the invention
The purpose of the present invention is to provide a kind of groove profile rails and I-rail connection structure and welding method, to solve existing skill
The mutual bonding strength of grider rail and I-rail of different model is inadequate in art, and the transition rail of use increases production cost, and
And influence the defect of intact stability.
The groove profile rail and I-rail connection structure, including groove profile rail, I-rail and special-shaped transition rail, the groove profile
Rail, special-shaped transition rail are equal with the rail head of I-rail height and work edge direction is consistent, and the special-shaped transition rail includes slot
Type orbital segment, changeover portion and I-rail linkage section, the grooved track section shape is identical as the groove profile rail, and the I-rail connects
It connects section to be weldingly connected with the I-rail, the grooved track section is weldingly connected with the groove profile rail, the web of the rail of the I-rail
It is non-coplanar with the web of the rail of the I-rail linkage section, the difference of the web of the rail of the web of the rail of the I-rail and the I-rail linkage section
Side is respectively welded stiffening plate in connecting pin, and the reinforcement plate end face is weldingly connected with the corresponding web of the rail respectively.
Preferably, the stiffening plate includes the stiffening plate one being welded on the I-rail linkage section and is welded on the work
Stiffening plate two on word rail, the end face of the stiffening plate one and the web of the rail of the I-rail are weldingly connected, and lateral surface with it is described
The web of the rail lateral surface of I-rail is concordant, and the end face of the stiffening plate two and the end face of the I-rail linkage section are weldingly connected, and
Lateral surface is concordant with the web of the rail lateral surface of the I-rail linkage section.
Preferably, the length of the stiffening plate one is equal to the sum of the length of the changeover portion and the I-rail linkage section,
The shape and changeover portion of the stiffening plate one and the web of the rail side view of the I-rail linkage section are adapted.
Preferably, the both sides up and down of the stiffening plate one are welded to rail head bottom surface and the rail of the special-shaped transition rail
Bottom top surface, the fitting of both sides up and down of the stiffening plate two are welded to the rail head bottom surface and rail bottom top surface of the I-rail.
Preferably, the rail bottom depth of the I-rail linkage section is equal with the I-rail less than the groove profile rail, described
The rail bottom of changeover portion is inclination rail bottom of the connection grooved track section to the I-rail linkage section.
The present invention also provides the welding methods of a kind of groove profile rail and I-rail connection structure, comprising the following steps:
Step 1: the web of the rail side weld reinforcement plate one of the one end that is connected in the special-shaped transition rail with I-rail, and it is same
When I-rail the web of the rail other side weld reinforcement plate two, the end face of the stiffening plate one against the I-rail the web of the rail,
The web of the rail of the end face of the stiffening plate two against the special-shaped transition rail；
Step 2: then the connecting pin of the special-shaped transition rail and the I-rail is welded by welding wire to good
It connects, the rail bottom part of the two is weldingly connected, by the web of the rail of the I-rail linkage section of special-shaped transition rail and stiffening plate biend
It is weldingly connected, the web of the rail of I-rail and one end face of stiffening plate is weldingly connected, then by special-shaped transition rail and the I-rail
Rail head is weldingly connected；
Step 3: then the channel suspending rail section end of the special-shaped transition rail and groove profile rail end are passed through weldering to good
Silk is welded together；
Step 4: carrying out normalizing, normalizing to the welding point that the special-shaped transition rail and the I-rail are weldingly connected
Temperature range is 700-1000 DEG C, and normalizing soaking time is 30-40min；
Step 5: polishing welding portion, carries out surface anticorrosion after flaw detection is qualified.
Preferably, it welds in the step 2 from rail bottom, when being soldered at the 10-17mm of rail head top surface, will weld upwards
Silk is changed to abrasion-resistant welding wire and completes welding.
Preferably, in the step 2, the bonding area of stiffening plate side and web section is increased, and after welding will weldering
The place of connecing is polishing to smoothly transit with the web of the rail.
The present invention has the advantages that it is close with groove profile rail on the special-shaped transition steel-rail structure that the present invention uses, it can be direct
It is forged and pressed and is manufactured using grider rail, without designing the mold of monoblock cast, the speed and energy-saving effect of forging and stamping are also superior to monoblock cast
Transition rail, while intensity of the invention is unaffected substantially, has preferable reliability compared with prior art.Simultaneously
Since work edge direction is consistent, stability is preferable when vehicle operation passes through.
Due to special-shaped transition rail the web of the rail and I-rail the web of the rail not on one face, therefore, it is difficult to effectively be welded.
The present invention is by overcoming shape welding by the welding of the web of the rail end face of stiffening plate and I-rail in the two web of the rail side weld reinforcement plate
Connect the jejune defect of technique.It welds the stiffening plate end face that the web of the rail of the same special-shaped transition rail can also be welded with I-rail side
It realizes and increases bonding area, improve the effect of weld strength.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention (omitting groove profile rail part)；
Fig. 2 is the lateral plan of special-shaped transition rail and I-rail coupling part in the present invention；
Fig. 3 is the left view of structure shown in Fig. 2；
Fig. 4 is the structural schematic diagram of special-shaped transition rail in the present invention.
In above-mentioned attached drawing: 1, special-shaped transition rail；2, I-rail；3, stiffening plate two, 4, stiffening plate one, 5, rail head, 6,
The web of the rail, 7, rail bottom, 8, chamfering.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making further details of theory to the specific embodiment of the invention
It is bright, to help those skilled in the art to have more complete, accurate and deep reason to inventive concept of the invention, technical solution
Solution.
Embodiment 1
As Figure 1-Figure 4, the present invention provides a kind of groove profile rails and I-rail connection structure and welding method.Its bracket groove
Type rail and I-rail connection structure include groove profile rail, I-rail 2 and special-shaped transition rail 1, the groove profile rail, special-shaped transition rail
1 is equal with the rail head 5 of I-rail 2 height and work edge direction is consistent, and the special-shaped transition rail 1 includes grooved track section, mistake
Cross section and I-rail linkage section, the grooved track section shape is identical as the groove profile rail, the I-rail linkage section with it is described
I-rail 2 is weldingly connected, and the grooved track section is weldingly connected with the groove profile rail.Obvious grooved track section and the groove profile rail
Between connection structure and status groove profile rail between the connection structure that is connected by welding it is identical, therefore be not described in detail, it is attached
Also the part-structure is omitted in figure.
7 depth of rail bottom of the I-rail linkage section is equal with the I-rail 2 to be less than the groove profile rail, the changeover portion
Rail bottom 7 be inclination rail bottom 7 of the connection grooved track section to the I-rail linkage section.In order to allow the lesser I-shaped of width
The rail bottom 7 of rail 2 and the rail bottom 7 of I-rail linkage section can preferably weld together, and reduce stress and concentrate, in I-rail linkage section
Rail bottom 7 chamfer a chamfering 8, enable its connecting pin end face width equal with the rail bottom 7 of I-rail 2.
The web of the rail 6 of the I-rail 2 and the web of the rail 6 of the I-rail linkage section are non-coplanar, the web of the rail 6 of the I-rail 2
Stiffening plate, the reinforcement plate end face point are respectively welded in connecting pin with the not ipsilateral of the web of the rail 6 of the I-rail linkage section
It is not weldingly connected with the corresponding web of the rail 6.
The stiffening plate includes the stiffening plate 1 being welded on the I-rail linkage section and is welded on the I-rail 2
On stiffening plate 23, the end face of the stiffening plate 1 and the web of the rail 6 of the I-rail 2 be weldingly connected, and lateral surface with it is described
6 lateral surface of the web of the rail of I-rail 2 is concordant, and the end face of the stiffening plate 23 and the end face of the I-rail linkage section are weldingly connected,
And lateral surface is concordant with 6 lateral surface of the web of the rail of the I-rail linkage section.
Wherein, the length of the stiffening plate 1 is equal to the sum of the length of the changeover portion and the I-rail linkage section, institute
The shape and 6 side view of the web of the rail of changeover portion and the I-rail linkage section for stating stiffening plate 1 are adapted.The stiffening plate one
4 both sides up and down are welded to 7 top surface of 5 bottom surface of rail head and rail bottom of the special-shaped transition rail 1, the stiffening plate 23
Upper and lower both sides fitting is welded to 7 top surface of 5 bottom surface of rail head and rail bottom of the I-rail 2.
It is close with groove profile rail in 1 structure of special-shaped transition rail that the present invention uses, it can directly utilize grider rail forging and stamping system
It makes, without designing the mold of monoblock cast, the transition rail of the speed of forging and stamping and energy-saving effect also superior to monoblock cast, while this hair
Bright intensity is unaffected substantially, has preferable reliability compared with prior art.Simultaneously because work edge direction one
It causes, stability is preferable when vehicle operation passes through.
Due to special-shaped transition rail the web of the rail 6 and I-rail 2 the web of the rail 6 not on one face, therefore, it is difficult to effectively be welded
It connects.The present invention by 6 end face of the web of the rail welding of stiffening plate respective carter by being overcome in 6 side weld reinforcement plate of the two web of the rail
The special-shaped jejune defect of welding procedure.The stiffening plate that the web of the rail 6 of the same special-shaped transition rail can also be welded with 2 side of I-rail
End face welding, which is realized, increases bonding area, improves the effect of weld strength.
For above-mentioned connection structure, the present invention also provides the welding method of a kind of groove profile rail and I-rail connection structure,
The following steps are included:
Step 1: the 6 side weld reinforcement plate 1 of the web of the rail of the one end that is connected in the special-shaped transition rail 1 with I-rail 2,
And simultaneously in the other side weld reinforcement plate 23 of the web of the rail 6 of I-rail 2, the end face of the stiffening plate 1 is against the I-rail
2 web of the rail 6, the web of the rail 6 of the end face of the stiffening plate 23 against the special-shaped transition rail 1；
Step 2: then passing through welding wire and carrying out the connecting pin of the special-shaped transition rail 1 and the I-rail 2 to good
Welding, 7 part of rail bottom of the two is weldingly connected, by the web of the rail 6 of the I-rail linkage section of special-shaped transition rail 1 and stiffening plate two
3 end faces are weldingly connected, and the web of the rail 6 of I-rail 2 and one 4 end face of stiffening plate are weldingly connected, then by special-shaped transition rail 1 with it is described
The rail head 5 of I-rail 2 is weldingly connected；
Step 3: then the channel suspending rail section end of the special-shaped transition rail 1 and groove profile rail end are passed through weldering to good
Silk is welded together；
Step 4: carrying out normalizing to the special-shaped transition rail 1 and the welding point that the I-rail 2 is weldingly connected, just
Fiery temperature range is 700-1000 DEG C, and normalizing soaking time is 30-40min；
Step 5: polishing welding portion, carries out surface anticorrosion after flaw detection is qualified.
In order to reinforce the intensity of 5 portion connection of rail head, adapt to wear caused by gear is frequent, from rail in the step 2
Bottom 7 is welded upwards, when being soldered at 5 top surface 10-17mm of rail head, welding wire is changed to abrasion-resistant welding wire and completes welding.Simultaneously
In order to improve fatigue resistance, avoids stress from concentrating, in the step 2, increase the welding surface of stiffening plate side and 6 part of the web of the rail
Product, and weld is polishing to is smoothly transitted with the web of the rail 6 after welding.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, it is or not improved as long as using the improvement for the various unsubstantialities that the method for the present invention conception and technical scheme carry out
Present inventive concept and technical solution are directly applied into other occasions, within that scope of the present invention.
Claims (8)
1. a kind of groove profile rail and I-rail connection structure, including groove profile rail and I-rail (2), it is characterised in that: further include abnormal shape
Transition rail (1), the equal and working edge side of rail head (5) height of the groove profile rail, special-shaped transition rail (1) and I-rail (2)
To consistent, the special-shaped transition rail (1) includes grooved track section, changeover portion and I-rail linkage section, the grooved track section
Shape is identical as the groove profile rail, and the I-rail linkage section is weldingly connected with the I-rail (2), the grooved track section with
The groove profile rail is weldingly connected, and the web of the rail (5) of the I-rail (2) and the web of the rail (5) of the I-rail linkage section are non-coplanar, institute
The not ipsilateral for stating the web of the rail (5) of I-rail (2) and the web of the rail (5) of the I-rail linkage section is respectively welded benefit in connecting pin
Strong plate, the reinforcement plate end face are weldingly connected with the corresponding web of the rail (5) respectively.
2. a kind of groove profile rail according to claim 1 and I-rail connection structure, it is characterised in that: the stiffening plate includes
The stiffening plate one (4) being welded on the I-rail linkage section and the stiffening plate two (3) being welded on the I-rail (2), institute
The end face for stating stiffening plate one (4) and the web of the rail (5) of the I-rail (2) are weldingly connected, and lateral surface and the I-rail (2)
The web of the rail (5) lateral surface is concordant, and the end face of the stiffening plate two (3) and the end face of the I-rail linkage section are weldingly connected, and outer
Side is concordant with the web of the rail (5) lateral surface of the I-rail linkage section.
3. a kind of groove profile rail according to claim 2 and I-rail connection structure, it is characterised in that: the stiffening plate one
(4) length is equal to the sum of the length of the changeover portion and the I-rail linkage section, the shape and mistake of the stiffening plate one (4)
The web of the rail (5) side view for crossing section and the I-rail linkage section is adapted.
4. a kind of groove profile rail according to claim 3 and I-rail connection structure, it is characterised in that: the stiffening plate one
(4) both sides up and down are welded to rail head (5) bottom surface and rail bottom (6) top surface of the special-shaped transition rail (1), the reinforcement
The fitting of both sides up and down of plate two (3) is welded to rail head (5) bottom surface and rail bottom (6) top surface of the I-rail (2).
5. a kind of groove profile rail according to claim 1 and I-rail connection structure, it is characterised in that: the I-rail connection
Rail bottom (6) depth of section is equal with the I-rail (2) to be less than the groove profile rail, and the rail bottom (6) of the changeover portion is connection institute
State grooved track section to the I-rail linkage section inclination rail bottom (6).
6. it is a kind of according to claim 1 in -5 any the groove profile rail and I-rail connection structure welding method, feature
It is: the following steps are included:
Step 1: the web of the rail (5) side weld reinforcement plate one of the one end that is connected in the special-shaped transition rail (1) with I-rail (2)
(4), and simultaneously I-rail (2) the web of the rail (5) other side weld reinforcement plate two (3), the end face pair of the stiffening plate one (4)
The web of the rail (5) of the I-rail (2), the web of the rail of the end face of the stiffening plate two (3) against the special-shaped transition rail (1)
(5)；
Step 2: then passing through welding wire and carrying out the connecting pin of the special-shaped transition rail (1) and the I-rail (2) to good
Welding, the rail bottom (6) of the two is partially weldingly connected, and by the web of the rail (5) of the I-rail linkage section of special-shaped transition rail (1) and is mended
Strong plate two (3) end face is weldingly connected, and the web of the rail (5) of I-rail (2) is weldingly connected with stiffening plate one (4) end face, then will be special-shaped
Transition rail (1) and the rail head (5) of the I-rail (2) are weldingly connected；
Step 3: then the channel suspending rail section end of the special-shaped transition rail (1) and groove profile rail end are passed through welding wire to good
Welded together；
Step 4: carrying out normalizing to the welding point that the special-shaped transition rail (1) and the I-rail (2) are weldingly connected, just
Fiery temperature range is 700-1000 DEG C, and normalizing soaking time is 30-40min；
Step 5: polishing welding portion, carries out surface anticorrosion after flaw detection is qualified.
7. the welding method of a kind of groove profile rail and I-rail connection structure according to claim 6, it is characterised in that: described
It is welded upwards in step 2 from rail bottom (6), when being soldered at rail head (5) top surface 10-17mm, welding wire is changed to wear-resisting weldering
Silk completes welding.
8. the welding method of a kind of groove profile rail and I-rail connection structure according to claim 6, it is characterised in that: described
In step 2, increase stiffening plate side and the web of the rail (5) part bonding area, and after welding by weld be polishing to it is described
The web of the rail (5) smoothly transits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811030573.3A CN108951314B (en) | 2018-09-05 | 2018-09-05 | Groove type rail and I-shaped rail connecting structure and welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811030573.3A CN108951314B (en) | 2018-09-05 | 2018-09-05 | Groove type rail and I-shaped rail connecting structure and welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108951314A true CN108951314A (en) | 2018-12-07 |
| CN108951314B CN108951314B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811030573.3A Active CN108951314B (en) | 2018-09-05 | 2018-09-05 | Groove type rail and I-shaped rail connecting structure and welding method |
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| CN (1) | CN108951314B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112975284A (en) * | 2021-02-20 | 2021-06-18 | 中国铁建重工集团股份有限公司道岔分公司 | Manufacturing method of special-shaped rail |
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| CN204401374U (en) * | 2015-01-04 | 2015-06-17 | 上海市城市建设设计研究总院 | For the transition rail connected between the different rail type of modern tram |
| CN204417933U (en) * | 2014-12-31 | 2015-06-24 | 成都市新筑路桥机械股份有限公司 | Groove-shape rail expansion and cotraction regulator |
| CN208830067U (en) * | 2018-09-05 | 2019-05-07 | 芜湖中铁科吉富轨道有限公司 | A kind of groove profile rail and I-rail connection structure |
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2018
- 2018-09-05 CN CN201811030573.3A patent/CN108951314B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1108715A (en) * | 1994-02-15 | 1995-09-20 | Kihn有限公司 | Process for modifying the section of a rail way rail and rail thus obtained |
| DE202013009743U1 (en) * | 2013-12-02 | 2014-02-07 | Christoph Riecken | rail link |
| CN204417933U (en) * | 2014-12-31 | 2015-06-24 | 成都市新筑路桥机械股份有限公司 | Groove-shape rail expansion and cotraction regulator |
| CN204401374U (en) * | 2015-01-04 | 2015-06-17 | 上海市城市建设设计研究总院 | For the transition rail connected between the different rail type of modern tram |
| CN208830067U (en) * | 2018-09-05 | 2019-05-07 | 芜湖中铁科吉富轨道有限公司 | A kind of groove profile rail and I-rail connection structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112975284A (en) * | 2021-02-20 | 2021-06-18 | 中国铁建重工集团股份有限公司道岔分公司 | Manufacturing method of special-shaped rail |
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